diff --git a/docs/release-notes/zipline-0.8.0.md b/docs/release-notes/zipline-0.8.0.md
index 8428ce06..222e4355 100644
--- a/docs/release-notes/zipline-0.8.0.md
+++ b/docs/release-notes/zipline-0.8.0.md
@@ -49,7 +49,7 @@
   > Example:
 ```python
 # The standard deviation of the price in the last 3 days.
-data[security].stdev(3)
+data[security].stddev(3)
 ```
 
 ### New fields in Performance Period [PR464](https://github.com/quantopian/zipline/pull/464)